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The Role of the Hydrologic Regime and Environmental Changes in...
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The Role of the Hydrologic Regime and Environmental Changes in Algal Communities Development

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Water Quality and Contamination".

Deadline for manuscript submissions: closed (31 December 2020) | Viewed by 12476

Special Issue Editor

Prof. Dr. István Grigorszky

E-Mail Website
Guest Editor
University of Debrecen, Department of Hydrobiology, Egyetem tér 1., H-4032 Debrecen, Hungary
Interests: hydrobiology; algae; water quality; wetlands; running water; standing water

Special Issue Information

Dear Colleagues,

Algae are a diverse group of organisms comprising several taxonomical and functional groups. Algae are important indicators of environment changes, since they respond immediately to natural or human-dependent hydrologic alterations, such as increases in water pollution caused by domestic and industrial wastes, by both qualitative and quantitative species variations. They can also affect water composition, moderating the impact of deleterious changes. At any point, the abundance and community patterns of algae in a water system reflect precisely the water quality. Algae can be used to compare relative variations in water quality in terms of habitat variability or time.

This Special Issue of Water will focus on algal ecology and welcomes theoretical and experimental studies on how various standing and running water systems impinge directly on algae composition through their hydrologic regime and physical and chemical features. The Guest Editor will consider papers addressing planktonic and benthic algae and their interactions with the environment in any aquatic system. This Special Issue is open to submissions from all scientists around the world.

Prof. Dr. István Grigorszky
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Planktonic and Benthic Algae
  • Running and Standing Water
  • Water Quality
  • Pollution
  • Eutrophication

Published Papers (3 papers)

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Research

24 pages, 7703 KiB  
Article
Long-Term Changes of Species Composition and Functional Traits of Epiphytic Diatoms in the Szigetköz Region (Hungary) of the Danube River
by Éva Ács, Tibor Bíró, Csaba Berta, Mónika Duleba, Angéla Földi, István Grigorszky, András Hidas, Judit Knisz, János L. Korponai, Zsuzsa Trábert, Edit Vadkerti and Krisztina Buczkó
Water 2020, 12(3), 776; https://doi.org/10.3390/w12030776 - 11 Mar 2020
Cited by 2 | Viewed by 3161
Abstract
Here we report the results of our decades-long study on epiphytic communities from two tributary systems of the Szigetköz section of the Danube River. The main goal of the investigation was to detect changes in the epiphytic communities at structural (core species, changes [...] Read more.
Here we report the results of our decades-long study on epiphytic communities from two tributary systems of the Szigetköz section of the Danube River. The main goal of the investigation was to detect changes in the epiphytic communities at structural (core species, changes in the relative abundance of common species) and functional (trait changes) levels as a result of the most important anthropogenic effects on Szigetköz, i.e., hydro-morphological modifications. We also examined the impact of rehabilitation on the tributary systems in terms of ecological potential. We discovered that mainly motile diatom species characterized the epiphyton due to reduced water volume were introduced into the tributary system after the diversion of the Danube. The ecosystem stabilized in the rehabilitated section, while the non-rehabilitated section showed a worsening tendency, mainly in the parapotamic branches. Our long-term data sets may provide a good basis for comparisons of different aquatic ecosystems, to define changes in the abundance of core species and in the structure of community in response to different anthropogenic pressures. It is fundamental to determine adaptive traits in assessing the impact of global warming stressors on biodiversity. Full article
(This article belongs to the Special Issue The Role of the Hydrologic Regime and Environmental Changes in Algal Communities Development)
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20 pages, 1800 KiB  
Article
Use of Diatoms in Monitoring the Sakarya River Basin, Turkey
by Cüneyt Nadir Solak, Łukasz Peszek, Elif Yilmaz, Halim Aytekin Ergül, Melih Kayal, Fatih Ekmekçi, Gábor Várbíró, Arzu Morkoyunlu Yüce, Oltan Canli, Mithat Sinan Binici and Éva Ács
Water 2020, 12(3), 703; https://doi.org/10.3390/w12030703 - 4 Mar 2020
Cited by 23 | Viewed by 5674
Abstract
The Sakarya River basin is one of the largest basins in Turkey, and encompasses the Kocaeli, Düzce, Sakarya, Bursa, Bilecik, Bolu, Kütahya, Eskişehir, Ankara, Afyon, and Konya provinces. In this study, the water quality status of the basin was investigated using 18 diatom [...] Read more.
The Sakarya River basin is one of the largest basins in Turkey, and encompasses the Kocaeli, Düzce, Sakarya, Bursa, Bilecik, Bolu, Kütahya, Eskişehir, Ankara, Afyon, and Konya provinces. In this study, the water quality status of the basin was investigated using 18 diatom indices, calculated in Omnidia software. For this purpose, a total of 46 stations were surveyed in the rivers and streams of the basin in May 2018. As a result, 41 of 195 diatom taxa were found to be the most frequent (>10% share in assemblage). According to Detrented Correspondence Analysis (DCA), three subgroups were described as the spring section, Ankara and Polatlı section, and lowland section. The river basin quality was evaluated as moderate or lower quality status, while only a few sites had good status. The diatom index scores showed that the Descy’s Index (DES), Pampean Diatom Index (IDP), Artois-Picardie Diatom Index (IDAP), and Specific Pollution Sensitivity Index (IPS) appear best suited to water quality assessment in this area, showing the largest number of significantly important correlation with environmental variables. Full article
(This article belongs to the Special Issue The Role of the Hydrologic Regime and Environmental Changes in Algal Communities Development)
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20 pages, 3753 KiB  
Article
Effect of Land Use on the Benthic Diatom Community of the Danube River in the Region of Budapest
by Zsuzsa Trábert, Mónika Duleba, Tibor Bíró, Péter Dobosy, Angéla Földi, András Hidas, Keve Tihamér Kiss, Mihály Óvári, Anita Takács, Gábor Várbíró, Gyula Záray and Éva Ács
Water 2020, 12(2), 479; https://doi.org/10.3390/w12020479 - 11 Feb 2020
Cited by 16 | Viewed by 3189
Abstract
(1) Urbanization significantly influences the ecosystems of rivers in various ways, including the so-called loading effect of wastewater production. Benthic diatoms are used in ecological status assessments of waters. Beside species composition, traits can be used as indicators. We aimed to evaluate how [...] Read more.
(1) Urbanization significantly influences the ecosystems of rivers in various ways, including the so-called loading effect of wastewater production. Benthic diatoms are used in ecological status assessments of waters. Beside species composition, traits can be used as indicators. We aimed to evaluate how the loading of the large city of Budapest manifests in the physico-chemical variables of the River Danube and what species composition and trait response this loading results in for the benthic diatom communities. (2) Weekly samplings were performed at points upstream and downstream of Budapest on both riverbanks. Samples were compared, based on general physical-chemical variables and the concentration of thirty-four elements, as well as species composition and seven traits of species of diatom communities. Ecological status was assessed using the Specific Pollution Sensitivity Index (IPS). (3) Only a few measured environmental variables showed differences between the sampling points, suggesting that the nutrient loading has significantly decreased due to the installation of several efficiently working wastewater treatment plants since the introduction of the European Union Water Framework Directive. In contrast, the species composition and traits of species showed the effect of land use. Benthic diatoms indicate the environmental changes caused by land use in the longer-term, while chemical measurements reflect instantaneous status. Full article
(This article belongs to the Special Issue The Role of the Hydrologic Regime and Environmental Changes in Algal Communities Development)
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